Articles tagged with Sea Level Rise
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A study led by the University of Hawaii at Manoa found that US Pacific and Gulf of Mexico coastlines will experience rapid increases in high-tide flooding days, with extreme months also emerging
Researchers found that coastal overtopping is set to increase exponentially by 2050, with a 50-fold increase possible under high emission scenarios. Global warming will exacerbate flooding risks in tropical areas and other hotspots, necessitating adaptation measures.
The Pine Island Glacier's ice shelf has been losing a significant portion of its area in recent years, causing the glacier to speed up. The study found that internal forces on the glacier are responsible for this process, which could lead to a more rapid and abrupt collapse.
A new study on Petermann Glacier found that the way under-ice landscape is represented in models can significantly impact future sea-level rise predictions. The researchers discovered that a warmer ocean could trigger the break-up of the glacier, leading to increased mass loss from Earth's polar ice sheets.
Researchers have extended Singapore's sea-level record to nearly 10,000 years ago, providing a more robust dataset to aid future predictions. The findings also reveal the first conclusive evidence that mangroves only existed in the Marina South area for around 300 years before succumbing to flooding associated with rising sea levels.
A large-scale research project assessed Earth's 92,033 debris-covered glaciers and found that debris substantially reduces glacier mass loss. This discovery will improve risk assessment for communities near these glaciers, which can lead to glacial lake formation and potential flood hazards.
A new study by Stevens Institute of Technology researcher finds that human-caused sea level rise contributed $8.1 billion to Hurricane Sandy's damage, with an additional 71,000 people and 36,000 homes affected. The research uses novel modeling techniques to quantify the costs of storm damage caused by climate change.
Researchers detected new early-warning signals indicating the Greenland Ice Sheet's destabilization and potential melting at limited warming levels. The study suggests that a tipping point is approaching in the central-western part of the ice sheet, which could lead to substantial long-term sea level rise.
A new study led by UMass Amherst's Rob DeConto models the impact of different warming scenarios on the Antarctic Ice Sheet, finding that exceeding Paris Agreement targets will accelerate sea-level rise. The research suggests that ambitious action to rein in warming is necessary to prevent catastrophic ice loss and sea level rise.
A Rutgers coauthored study suggests catastrophic sea-level rise from Antarctic melting may occur if global warming exceeds 2 degrees Celsius, triggering rapid ice-sheet retreat and collapse. The risk of such an event is lower if the Paris Agreement's target is met.
A collaborative research project published in Nature offers the most complete sea-level rise projections created to date, with Antarctica remaining a wild card. Limiting global warming to 1.5 degrees C above pre-industrial temperatures could cut projected 21st century sea-level rise from land ice in half.
A new Harvard study found that the collapse of the West Antarctic Ice Sheet could amplify global sea level rise estimates by an additional meter within 1,000 years. The researchers' calculations show that this effect would add 30% to the total projected sea level rise, exceeding previous forecasts.
A new study predicting human exodus in Bangladesh due to sea-level rise and climate change has significant global implications. The research model considers economic and human behavior factors, predicting that districts along the Bay of Bengal will be the first impacted, triggering a ripple effect across the country.
A recent study by URI researchers shows that the Gulf Stream's position relative to the Grand Banks of Newfoundland can predict rapid warming of the Northwest Atlantic Shelf. The team used satellite data to observe the mechanism behind these changes, which block the southwestward transport of cold water and lead to marine heat waves.
Scientists are searching for sunken treasure that holds key to protecting Texas' Gulf shoreline from storms and rising seas. They will create a high-resolution seismic map of ancient river valleys to estimate volume and quality of sand.
A third of Antarctic's ice shelf area could collapse into the sea if global temperatures reach 4°C above pre-industrial levels, new research shows. Limiting temperature rise to 2°C could halve the area at risk and potentially avoid significant sea level rise.
A recent study by Durham University reveals that the rapid sea-level rise at the end of the last ice age was primarily caused by the melting of ice sheets in North America and Scandinavia. This finding, which challenges previous theories, provides valuable insights into the complex interactions between ice-ocean-climate systems.
A Rutgers-led study reveals the 20th century saw the fastest sea-level rise in 2,000 years along much of the US Atlantic coast. The global increase from melting ice and warming oceans was more than twice the average for the past 1800 years.
New research reveals coastal populations experience relative sea-level rise of 7.8-9.9mm/year, outpacing the global average by up to four times, highlighting the urgent need for addressing human-induced subsidence to protect people and economies.
A new study reveals that fairy wrasses' diverged in form and colour after repeated sea level rises and falls during the last ice age, driven by an 'evolutionary arms race' to court females and chase off rival males. The research used a novel genome-wide dataset to reconstruct the fish's evolutionary history.
Researchers have reevaluated sea level rise predictions, finding they may be too conservative. By comparing model simulations with historical data, the team found that the rate of sea level rise has been accelerating over the past 150 years.
A new study finds that even a modest sea level rise would place 100 airports below mean sea level by 2100, posing a significant risk to global passenger and freight movements. The researchers ranked airports at risk from sea level rise, with some in Asia and Europe topping the list.
Researchers used phreatic overgrowths on speleothems in Mallorca caves to determine past sea levels, providing a way to precisely measure sea levels. The study's results show that sea level dropped significantly after the Pliocene period and fluctuated during warm periods.
Rutgers scientists found that bacteria cause sunlight-absorbing sediment to clump together and accumulate in meltwater streams on the Greenland ice sheet. This process can be incorporated into climate models for more accurate melting predictions.
A new assessment suggests sea level rise could be higher than current estimates by 2100 due to uncertainties in ice sheet dynamics and warming oceans. Scientists identify key areas of research needed to improve models and predictions, including better mapping of glacier ground and improved coupling of atmosphere-ocean-ice sheet models.
Scientists analyzed 141 outlet glaciers on the Greenland Ice Sheet to predict how far thinning may spread along their flow lines. Glaciers flowing over gentle slopes could have a greater impact on sea-level rise due to their ability to let thinning expand hundreds of kilometers inland.
A new study found that Hudson River tidal marshes are growing at a rate two to three times faster than sea level rise, suggesting they should be resilient to accelerated sea level rise. The research discovered that more than half of the marshes were created accidentally by humans between 1850 and now.
Research reveals Greenland outlet glaciers are halted by knickpoints, stabilizing areas that prevent coastal thinning from reaching inland. However, vulnerable northwest Greenland glaciers could contribute to sea level rise in the next 100 years due to flat bedrock.
Researchers at Stevens Institute of Technology predict that 100-year and 500-year flood levels will become regular occurrences in Jamaica Bay, New York by the end of the century. Climate change is expected to lead to more intense and frequent storms, causing greater flooding even if storm intensity remains the same.
A new study warns that the Greenland ice sheet will experience irreversible melting if global warming exceeds 2°C, leading to significant sea-level rise and permanent changes. The ice sheet's decline could be reversed with actions to counteract global warming before it's too late.
Mangrove forests are under pressure from three distinct threats: sea-level rise, lack of mud supply, and squeezed habitats. The study found that river dams decrease mud supply, while buildings and seawalls occupy space required for mangroves' survival.
A new study examines 12,000 years of sea-level rise and finds that changes in land area and human cultures happened at variable rates, out of step with the prevailing rate of sea-level rise. Researchers warn that future sea-level rise will not always be simple and that human responses will be equally localized.
A team of international coastal scientists disagrees with a paper predicting half the world's beaches will disappear by 2100 due to sea-level rise. They argue that beaches can migrate landward and retain their shape as long as they have space to move, but those backed by cliffs or seawalls are unlikely to survive.
Researchers propose adding altitude-measuring instruments to existing NOAA buoys to track global sea levels and monitor accelerating sea-rise rates. This approach will provide valuable insights into the effects of climate change on coastal areas.
Researchers found that accounting for climate variability increases predicted sea level rise by 2.7-4.3 inches by 2100, compared to 10.6-14.9 inches without variability. This additional ice melt will impact hurricane storm surges globally.
A Rutgers-led team created a model that enables improved sea-level rise projections and could help address climate change threats. The 'emulator' uses artificial intelligence to mimic ice-sheet behavior, providing valuable insights into ice sheet vulnerability through 2150.
A new study found that the spread of ghost forests across North Carolina's coastline can lead to significant losses in carbon stored in plants and trees above ground. Researchers discovered ways landowners can offset these losses, including tree plantings and proper drainage management.
A new study warns that up to 40% of O'ahu's sandy beaches could be lost by mid-century due to rising sea levels and shoreline hardening. The research assesses the risk of erosion hazards and identifies areas that qualify for emergency permitting, highlighting the need for creative solutions to rescue beachfront owners.
The Antarctic Ice Sheet is projected to account for up to 30 cm of sea level rise between 2015 and 2100, with some scenarios suggesting a partial offsetting effect. The Greenland Ice Sheet may contribute an additional 1.5-14 cm over the same period, depending on greenhouse gas emissions.
International model comparison reveals Greenland Ice Sheet will contribute 9cm to global sea-level rise by 2100, while Antarctic predictions vary between -7.8 to 30cm. However, ice-sheet models for Greenland underestimate the current changes in the ice sheet due to climate change.
Researchers document rapid acceleration and thinning of Pine Island and Thwaites Glaciers in Antarctica. The growth of damage areas on the ice shelves compromises integrity and drives further disintegration, highlighting the importance of incorporating damage processes into ice sheet models.
A new study models trade growth and port demand until 2050 under different climate policy scenarios, finding that port expansion will be necessary to meet increasing demand. The cost of building new port capacity is projected to exceed sea-level rise adaptation costs, with estimated costs ranging from $750 billion.
A new study from the University of Leeds and the Danish Meteorological Institute found that ice sheets in Greenland and Antarctica are melting at a rate accelerating faster than expected. If these rates continue, sea levels will rise by an additional 17cm, exposing 16 million people to coastal flooding annually.
Researchers found that climate change and coastal development will reduce suitable nesting grounds for loggerhead turtles by 10%, while green turtles will see a 7% decrease along the US East Coast. Leatherback turtles face minimal changes in suitable habitat availability.
Sea level variability is expected to increase with warming, altering tidal cycles and enhancing coastal flooding and erosion risks. Researchers found that nearly all global models agree on an overall tendency for increased variability on seasonal-to-interannual timescales.
Rising sea levels may cause more frequent and devastating river avulsions, altering the course of rivers to the sea. This shift in river dynamics could lead to costly infrastructure failures and increased flood risks for coastal communities.
Researchers find that San Francisco Bay Area coastal flooding causes region-wide commute disruptions, particularly in areas with sparse road networks. Climate change exacerbates the issue, and measuring road network density is crucial for understanding community resilience to flood-related delays.
A recent satellite survey tracked California's entire coast for over a decade, revealing local hotspots of subsidence in San Francisco, Los Angeles, and Santa Cruz. The study found that these areas will face increased flooding risk as sea levels rise, with rates of subsidence reaching up to 8.7 mm/year.
Sea turtles may experience a 87% decline in critical nesting habitat on Bioko Island by 2100 due to rising sea levels. The study, funded by HESS Equatorial Guinea and Purdue University Fort Wayne, predicts this impact for the beaches of Bioko Island.
Scientists have discovered three ways that deltas can respond to sea level rise, depending on the balance between sediment supply and rate of sea-level change. This understanding has significant implications for climate change and human interference, with potential impacts on river ecosystems and societal stability.
A study examines how sea-level rise and subsidence affect river avulsions on deltas, finding that frequent avulsions occur when rates of these processes match sediment supply. Engineered avulsions may help mitigate climate change effects, but thresholds exist where sediment supply cannot keep up with rising sea levels.
Researchers found that mangroves will likely stop growing vertically and instead encroach inland if sea levels rise above 6mm per year. Mangroves play a crucial role in carbon sequestration and protecting people from flooding, making it essential to adopt coastal management measures to protect these ecosystems.
New research suggests coral reef islands can respond to sea level rise by evolving through natural processes, potentially supporting near-term habitability. Islands composed of gravel material can raise their crest as sea level rises, with additional management challenges involved.
Ancient sediment analysis reveals mangrove ecosystems can survive up to a 7mm per year sea-level rise threshold. Mangroves provide essential ecosystem services but are threatened by rapid sea-level rise, with current rates expected to surpass the survival limit within 30 years.
According to the study, mangroves will not survive rising sea levels if global carbon emissions are not reduced. Mangroves can survive with rates of sea-level rise under 5mm per year but will stop growing at this pace if rates exceed 6mm/year.
A new study suggests that mangrove trees will likely disappear by 2050 if greenhouse gas emissions continue to rise, threatening the planet's ability to combat climate change. Mangroves store significant amounts of carbon and protect coastlines, providing habitat for fish and other species.
A new Tulane University study finds that coastal marshes in the Mississippi Delta are experiencing tipping points, where a small increase in sea-level rise leads to widespread submergence. The researchers predict that most marshes will drown in a few centuries once the rate of sea-level rise exceeds a certain threshold.
New Rutgers research confirms that modern sea-level rise is linked to human activities and not changes in Earth's orbit. Surprisingly, the Earth had nearly ice-free conditions with carbon dioxide levels similar to today.
A study led by Nanyang Technological University warns that global sea-level rise could exceed 1 meter by 2100 and 5 meters by 2300 if emission targets are not met. The study, which surveyed over 100 climate experts, found stark differences in sea-level projections for low versus high emissions.
Researchers found that groundwater inundation is the most extensive flood source, while direct marine inundation is the least. They developed a method to identify vulnerable locations and critical infrastructure likely to fail, emphasizing the need for site-specific consideration.